Q head / Q switches gooch and housego

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Acousto-optic Q-Switches are special Modulators designed for use inside laser cavities. They have exceptionally low insertion loss and are able to withstand very high laser powers. In normal use an RF signal is applied to the Q-Switch causing it to deflect a proportion of the laser beam. This increases the cavity losses and prevents lasing. When the RF signal is switched off, the cavity losses decrease rapidly and an intense laser pulse evolves.

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